Rib Knit Hat with Bump Cap Insert, Ergodyne N Ferno 6811ZI, Black , Polyester

One size fits all, easily adapts to almost any head size Soft and comfortable - soft acrylic with 3M flex stretch insulation Machine washable Zip on the back for inserting the bump cap Foam insert in the bump cap for more comfort, protection and lightness of the hat, Weight: 0.45 Pounds, Manufacturer: Ergodyne